10# Bututun Karfe mara kyau
Takaitaccen Bayani:
Bayanin samarwa:
Outer diamita na karfe bututu 20-426
Karfe bututu bango kauri na 20-426
Abubuwan sinadaran:
● No. 10 sumul karfe bututu sinadaran abun da ke ciki:
Carbon C: 0.07 ~ 0.14 ″ silicon Si: 0.17 ~ 0.37 Manganese Mn: 0.35 ~ 0.65 Sulfur S: ≤0.04 Phosphorus P: ≤0.35 chromium Cr: ≤0.15 Nickel Ni: 25≤0 Copper0: 25≤0
Kayan inji:
Mechanical Properties na No. 10 sumul karfe bututu: Tensile ƙarfi σb (MPa): ≥410(42) Ƙarfin Haɓaka σs (MPa): ≥245 (25) elongation δ5 (%) : ≥25 raguwa sashi (%) , taurin: unheated, ≤156HB, samfurin size: 25mm.
High ingancin carbon tsarin karfe:
No. 10 sumul karfe bututu ba ya ƙunshi sauran gami abubuwa (sai sauran abubuwa) sai carbon (C) element da wani adadin silicon (Si) don deoxidation (gaba daya ba fiye da 0.40%), manganese (Mn) (gaba daya ba fiye da 0.80%, har zuwa 1.20%) abubuwan gami.
Irin wannan ƙarfe dole ne ya sami nau'in sinadarai da kayan aikin injiniya.Abubuwan da ke cikin sulfur (S) da phosphorus (P) gabaɗaya ana sarrafa su ƙasa da 0.035%.Idan ana sarrafa shi a ƙasa da 0.030%, ana kiransa ƙarfe mai inganci, kuma "A" yakamata a ƙara bayan sa, kamar 20A;Idan P yana ƙarƙashin 0.025% kuma S ana sarrafa shi a ƙasa da 0.020%, ana kiran shi ƙarin ƙarfe mai inganci, kuma "E" ya kamata a ƙara bayan sa don nuna bambanci.Don sauran abubuwan da suka rage da ake kawowa cikin ƙarfe ta albarkatun ƙasa, kamar chromium (Cr), nickel (Ni), jan ƙarfe (Cu), da sauransu, abun ciki na Cr≤0.25%, Ni≤0.30%, Cu≤0.25%.Wasu nau'ikan manganese (Mn) abun ciki har zuwa 1.40%, wanda aka sani da ƙarfe na manganese.
No. 10 m karfe bututu nauyi lissafin dabara:[( waje diamita - bango kauri)* bango kauri]*0.02466=kg/m (nauyin kowace mita)
